I understand you’re worried about the bump at the site of your tetanus shot. It’s normal to have a bump there, and it might take some time to heal. Your immune system is reacting to the vaccine as if it were a foreign substance. If there’s no pain or redness, it’s usually not a cause for concern. Just be patient, and the bump should go away on its own. However, if you notice any unusual symptoms, it's best to seek medical advice.